Even "Superman" Li Ka-shing, pictured, is not proof against online mischief makers.

An anonymous "interview" with Li has been circulating on Facebook and other online forums, in which Asia's richest man supposedly advises people to buy property and cars over the next five years. The interview has gone viral.

But the Li Ka Shing Foundation issued a statement yesterday, saying the interview is a bogus one.

A spokesman said police will not be called in but the foundation issued the statement because Li is concerned many people could have been taken in and be persuaded to act on the so-called advice.

Recently a fake document was disseminated on the internet in a bid to boost property sales, saying the government was about to introduce more measures to cool the market. Police arrested a man over that incident.